Asked by grace
maria practiced for 40 minutes on sat. she practiced 10 minutes less in the morning the in the afternoon? how many minutes did she practice in the afternoon
Answers
Answered by
bobpursley
M + A=40
but M-10=A
so
M+M-10=40
add ten to each side
2M=30
morning=15min, afternoon 25min
but M-10=A
so
M+M-10=40
add ten to each side
2M=30
morning=15min, afternoon 25min
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